feat(database): support configurable SSL mode for PostgreSQL and MySQL

Add ssl_mode configuration option to allow users to customize SSL/TLS
policy for database connections instead of hardcoding sslmode=disable
for PostgreSQL and having no TLS support for MySQL.

Changes:
- database.Config, DatabaseConfig: add SSLMode field
- PostgreSQL DSN: replace hardcoded sslmode=disable with configurable
value
- MySQL DSN: append &tls=<SSLMode> parameter when SSLMode is set
- Full config pipeline: INI/env -> DatabaseConfig -> Config -> DSN ->
subprocess
- New env var BH_DB_SSL_MODE and ini key [database] ssl_mode
- Updated config example and documentation

configs/config.example.ini

@@ -28,6 +28,8 @@ path = data/baihu.db
 dsn = 
 # 表前缀
 table_prefix = baihu_
+# SSL 模式 (仅 mysql/postgres): postgres 支持 disable/require/verify-ca/verify-full; mysql 支持 true/skip-verify
+# ssl_mode = disable
 
 [security]
 # JWT 密钥。留空则在首次启动时自动生成并保存到数据库设置中。

docs/guide/configuration.md

@@ -22,6 +22,7 @@
 | `BH_DB_PATH` | database.path | SQLite 物理文件存储路径 | ./data/baihu.db |
 | `BH_DB_DSN` | database.dsn | 数据库 DSN (仅 mysql/postgres, 优先级高。**需对应设置 type**) | - |
 | `BH_DB_TABLE_PREFIX` | database.table_prefix | 数据库表前缀 | baihu_ |
+| `BH_DB_SSL_MODE` | database.ssl_mode | SSL 模式: postgres 支持 disable/require/verify-ca/verify-full; mysql 支持 true/skip-verify | - |
 | `BAIHU_SECRET_KEY` | - | 系统加密秘钥，用于机密变量功能（**注：仅支持环境变量设置，不支持配置文件**） | - |
 
 ---

internal/bootstrap/bootstrap.go

@@ -107,6 +107,7 @@ func (a *App) initDatabase() {
 		DBName:   a.Config.Database.DBName,
 		Path:     a.Config.Database.Path,
 		DSN:      a.Config.Database.DSN,
+		SSLMode:  a.Config.Database.SSLMode,
 	}
 
 	if err := database.Init(dbCfg); err != nil {

internal/constant/constant.go

@@ -193,6 +193,7 @@ var (
 	RuntimeDBPath        string
 	RuntimeDBDSN         string
 	RuntimeDBTablePrefix string
+	RuntimeDBSSLMode     string
 )
 
 // Secret JWT和密码salt密钥，运行中自动从数据库加载

internal/database/database.go

@@ -28,6 +28,7 @@ type Config struct {
 	DBName   string
 	Path     string // for sqlite
 	DSN      string // for mysql/mariadb unix socket or custom dsn
+	SSLMode  string // postgres: disable/require/verify-ca/verify-full; mysql: true/skip-verify
 }
 
 func Init(cfg *Config) error {
@@ -37,24 +38,19 @@ func Init(cfg *Config) error {
 	loc := systime.CST
 	time.Local = loc
 
+	dsn, err := buildDSN(cfg)
+	if err != nil {
+		return err
+	}
+
 	var dialector gorm.Dialector
 
 	switch cfg.Type {
 	case "sqlite":
-		dialector = sqlite.Open(cfg.Path + "?_busy_timeout=5000")
+		dialector = sqlite.Open(dsn)
 	case "mysql":
-		dsn := cfg.DSN
-		if dsn == "" {
-			dsn = fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Asia%%2FShanghai",
-				cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.DBName)
-		}
 		dialector = mysql.Open(dsn)
 	case "postgres":
-		dsn := cfg.DSN
-		if dsn == "" {
-			dsn = fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable TimeZone=Asia/Shanghai",
-				cfg.Host, cfg.Port, cfg.User, cfg.Password, cfg.DBName)
-		}
 		dialector = postgres.Open(dsn)
 	default:
 		return fmt.Errorf("unsupported database type: %s", cfg.Type)
@@ -102,3 +98,33 @@ func AutoMigrate(models ...interface{}) error {
 func GetDB() *gorm.DB {
 	return DB
 }
+
+func buildDSN(cfg *Config) (string, error) {
+	switch cfg.Type {
+	case "sqlite":
+		return cfg.Path + "?_busy_timeout=5000", nil
+	case "mysql":
+		if cfg.DSN != "" {
+			return cfg.DSN, nil
+		}
+		dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Asia%%2FShanghai",
+			cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.DBName)
+		if cfg.SSLMode != "" {
+			dsn += "&tls=" + cfg.SSLMode
+		}
+		return dsn, nil
+	case "postgres":
+		if cfg.DSN != "" {
+			return cfg.DSN, nil
+		}
+		sslMode := cfg.SSLMode
+		if sslMode == "" {
+			sslMode = "disable"
+		}
+		dsn := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=%s TimeZone=Asia/Shanghai",
+			cfg.Host, cfg.Port, cfg.User, cfg.Password, cfg.DBName, sslMode)
+		return dsn, nil
+	default:
+		return "", fmt.Errorf("unsupported database type: %s", cfg.Type)
+	}
+}

internal/services/config_service.go

@@ -28,6 +28,7 @@ type DatabaseConfig struct {
 	Path        string `ini:"path"`
 	DSN         string `ini:"dsn"`
 	TablePrefix string `ini:"table_prefix"`
+	SSLMode     string `ini:"ssl_mode"`
 }
 
 type SecurityConfig struct {
@@ -135,6 +136,7 @@ func LoadConfig(path string) (*AppConfig, error) {
 	constant.RuntimeDBPath = Config.Database.Path
 	constant.RuntimeDBDSN = Config.Database.DSN
 	constant.RuntimeDBTablePrefix = Config.Database.TablePrefix
+	constant.RuntimeDBSSLMode = Config.Database.SSLMode
 
 	// 暂存旧的 Secret，不再直接给 constant 赋值（改为到 settings 初始化时判断）
 	// constant.Secret = Config.Security.Secret
@@ -178,6 +180,7 @@ func applyEnvOverrides() {
 	getEnvStr("BH_DB_PATH", &Config.Database.Path)
 	getEnvStr("BH_DB_DSN", &Config.Database.DSN)
 	getEnvStr("BH_DB_TABLE_PREFIX", &Config.Database.TablePrefix)
+	getEnvStr("BH_DB_SSL_MODE", &Config.Database.SSLMode)
 
 	// Security
 	getEnvStr("BH_SECRET", &Config.Security.Secret)

internal/utils/runtime_env.go

@@ -35,6 +35,7 @@ func BuildRuntimeProcessEnv() []string {
 	appendEnvIfSet(&envs, "BH_DB_PATH", constant.RuntimeDBPath)
 	appendEnvIfSet(&envs, "BH_DB_DSN", constant.RuntimeDBDSN)
 	appendEnvIfSet(&envs, "BH_DB_TABLE_PREFIX", constant.RuntimeDBTablePrefix)
+	appendEnvIfSet(&envs, "BH_DB_SSL_MODE", constant.RuntimeDBSSLMode)
 
 	return envs
 }